FR2376130A1 - Procede de preparation d'isocyanate de methyle - Google Patents

Procede de preparation d'isocyanate de methyle

Info

Publication number
FR2376130A1
FR2376130A1 FR7800043A FR7800043A FR2376130A1 FR 2376130 A1 FR2376130 A1 FR 2376130A1 FR 7800043 A FR7800043 A FR 7800043A FR 7800043 A FR7800043 A FR 7800043A FR 2376130 A1 FR2376130 A1 FR 2376130A1
Authority
FR
France
Prior art keywords
isocyanate
condensation
methyl isocyanate
boiling point
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7800043A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of FR2376130A1 publication Critical patent/FR2376130A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention se rapporte à la chimie organique. Elle concerne un procédé de préparation d'isocyanate de méthyle par déshydrochloration thermique en 1 d'une solution de chlorure de méthyl carbamyle dans un solvant aprotique, condensation en 2 des gaz formés à une température supérieure au point d'ébullition de l'isocyanate de façon à liquéfier au moins une partie des gaz condensables à cette température, élimination du HC1 gazeux par condensation en 6 des gaz condensables résistant à une température inférieure au point d'ébullition de l'isocyanate, et séparation en 3, 4 de l'isocyanate du condensat obtenu dans l'étape de condensation. Utilisation par l'industrie chimique organique.
FR7800043A 1977-01-03 1978-01-03 Procede de preparation d'isocyanate de methyle Withdrawn FR2376130A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/756,554 US4082787A (en) 1977-01-03 1977-01-03 Methyl isocyanate process

Publications (1)

Publication Number Publication Date
FR2376130A1 true FR2376130A1 (fr) 1978-07-28

Family

ID=25044003

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800043A Withdrawn FR2376130A1 (fr) 1977-01-03 1978-01-03 Procede de preparation d'isocyanate de methyle

Country Status (11)

Country Link
US (1) US4082787A (fr)
JP (1) JPS5395914A (fr)
BE (1) BE862516A (fr)
CA (1) CA1086327A (fr)
DE (1) DE2800153A1 (fr)
DK (1) DK1278A (fr)
FR (1) FR2376130A1 (fr)
GB (1) GB1552742A (fr)
IT (1) IT1089268B (fr)
LU (1) LU78807A1 (fr)
NL (1) NL7800068A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703281A1 (de) * 1977-01-27 1978-08-03 Basf Ag Verfahren zur herstellung von aliphatischen isocyanaten
DE2806214A1 (de) * 1978-02-14 1979-08-16 Bayer Ag Verfahren zur kontinuierlichen aufarbeitung von bei der phosgenierung von monoaminen anfallenden loesungen
US4285876A (en) * 1979-10-10 1981-08-25 Vertac, Inc. Isocyanate adducts with β-diketones
ATE46500T1 (de) * 1985-12-12 1989-10-15 Du Pont Verfahren zum abtrennen von methylisocyanat.
EP2367828B1 (fr) * 2008-11-24 2014-06-11 Reliance Life Sciences Pvt., Ltd. Procédé de préparation de dérivés de tétrazine
CN102976976B (zh) * 2012-11-29 2014-11-26 湖南化工研究院 一种甲基异氰酸酯的制备方法
CN103694190B (zh) * 2013-12-25 2015-08-26 沙隆达集团公司 甲基异氰酸酯的生产方法和设备
CN104447410A (zh) * 2014-11-24 2015-03-25 湖南国发精细化工科技有限公司 甲基异氰酸酯合成工艺中残渣的处理系统及处理方法
CN104387295B (zh) * 2014-12-12 2017-01-25 湖南海利高新技术产业集团有限公司 甲基异氰酸酯的制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1400863A (fr) * 1963-07-12 1965-05-28 Bayer Ag Procédé et dispositif de préparation d'isocyanates d'alkyle
US3388145A (en) * 1963-07-12 1968-06-11 Bayer Ag Production of lower alkyl isocyanates
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
FR2264008A1 (fr) * 1974-03-11 1975-10-10 Basf Ag
FR2264007A1 (fr) * 1974-03-11 1975-10-10 Basf Ag
FR2270240A1 (fr) * 1974-05-08 1975-12-05 Basf Ag
DE2503270A1 (de) * 1975-01-28 1976-07-29 Basf Ag Verfahren zur herstellung von aliphatischen isocyanaten

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1400863A (fr) * 1963-07-12 1965-05-28 Bayer Ag Procédé et dispositif de préparation d'isocyanates d'alkyle
US3388145A (en) * 1963-07-12 1968-06-11 Bayer Ag Production of lower alkyl isocyanates
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
FR2264008A1 (fr) * 1974-03-11 1975-10-10 Basf Ag
FR2264007A1 (fr) * 1974-03-11 1975-10-10 Basf Ag
FR2270240A1 (fr) * 1974-05-08 1975-12-05 Basf Ag
DE2503270A1 (de) * 1975-01-28 1976-07-29 Basf Ag Verfahren zur herstellung von aliphatischen isocyanaten

Also Published As

Publication number Publication date
IT1089268B (it) 1985-06-18
US4082787A (en) 1978-04-04
GB1552742A (en) 1979-09-19
DK1278A (da) 1978-07-04
JPS5395914A (en) 1978-08-22
LU78807A1 (fr) 1979-03-26
BE862516A (fr) 1978-06-30
NL7800068A (nl) 1978-07-05
DE2800153A1 (de) 1978-07-13
CA1086327A (fr) 1980-09-23

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Legal Events

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